From cf6c422bf55fa8ac2531d56a6d17408300a59e8b Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Mon, 20 Mar 2023 14:44:29 +0200 Subject: [PATCH] drm/i915/debugfs: add crtc i915_pipe debugfs file MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The pipe may differ from crtc index if pipes are fused off. For testing purposes, IGT needs to know the pipe. There's already a I915_GET_PIPE_FROM_CRTC_ID IOCTL for this. However, the upcoming Xe driver won't have that IOCTL, and going forward, we'll want a unified interface for testing i915 and Xe, as they share the display code. Thus add the debugfs for i915 display. v2: User letters for pipe names (Ville) Cc: Bhanuprakash Modem Reviewed-by: Ville Syrjälä Tested-by: Bhanuprakash Modem Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20230320124429.786985-2-jani.nikula@intel.com --- .../gpu/drm/i915/display/intel_display_debugfs.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 3c76e718b9512..cc50262725584 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1383,6 +1383,17 @@ static int i915_current_bpc_show(struct seq_file *m, void *data) } DEFINE_SHOW_ATTRIBUTE(i915_current_bpc); +/* Pipe may differ from crtc index if pipes are fused off */ +static int intel_crtc_pipe_show(struct seq_file *m, void *unused) +{ + struct intel_crtc *crtc = m->private; + + seq_printf(m, "%c\n", pipe_name(crtc->pipe)); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(intel_crtc_pipe); + /** * intel_connector_debugfs_add - add i915 specific connector debugfs files * @connector: pointer to a registered drm_connector @@ -1453,4 +1464,6 @@ void intel_crtc_debugfs_add(struct intel_crtc *crtc) debugfs_create_file("i915_current_bpc", 0444, root, crtc, &i915_current_bpc_fops); + debugfs_create_file("i915_pipe", 0444, root, crtc, + &intel_crtc_pipe_fops); } -- 2.30.2